Bridges & tunnels
Long-span crossings, mountain tunnels and grade separations, from feasibility survey through load testing and handover.
We design, engineer and build the bridges, railways, ports and power systems that countries run on. 1,208 completed works across 47 countries.
Every division works to the same engineering standards, the same safety rules and the same handover file. A client in Mombasa receives the documentation a client in Chengdu receives.
Long-span crossings, mountain tunnels and grade separations, from feasibility survey through load testing and handover.
Conventional and high-speed alignments, depots, viaducts, stations and underground metro lines built under live-city constraints.
Container terminals, breakwaters, dredging and reclamation, with in-house marine plant and hydrographic survey teams.
Hydro and thermal plant civils, substations, and overhead transmission lines up to 800 kV across difficult terrain.
Dams, irrigation networks, flood defences and treatment plants, including operation during the first years of service.
Industrial parks, public buildings and residential districts delivered with their roads, drainage and utilities as one package.
Five works handed over between 2023 and 2026. Contract values are stated as awarded, in the currency of the contract.
Design–build · ¥ 9.4 bn · Opened to traffic Nov 2025
Yunnan, China 2021—25EPC · USD 1.9 bn · Handed over Mar 2026
Mombasa — Malindi, Kenya 2020—26Design–build · USD 740 m · Commissioned Jul 2024
East Java, Indonesia 2019—24EPC · ¥ 6.1 bn · In revenue service Dec 2025
Chengdu, China 2020—25PPP concession, 25 years · USD 2.3 bn · First power 2027
Northern Province, Zambia 2023—The stages below run in order on every project we sign. Each one closes with a document the client signs before the next begins, so responsibility never sits in an unnamed gap.
Survey, geotechnical investigation, route options and cost envelope.
Detailed design by our own institute, checked by an independent reviewer.
Long-lead plant, steel and equipment ordered against the fixed design.
Site works under one project director, with monthly progress certification.
Load testing, trial operation, defect close-out and the full handover file.
Maintenance and operator training, for a defined period or a concession term.
Overseas work has been more than half our order book since 2016. Each region is run by a resident director with local hiring and local procurement targets written into the contract.
Projects delivered by region since 1979. Figures include works completed by subsidiaries consolidated into the group after 2004.
Hammer Boom began as a provincial bridge bureau with 300 workers and one crane. It is now a listed group with its own design institute, precast yards, marine fleet and tunnelling plant — but it still only does one thing.
Founded in Beijing as the Hammer Boom Bridge Construction Bureau.
First long-span crossing completed over the Han River.
First overseas contract awarded — a highway package in Pakistan.
Design institute established, bringing engineering fully in-house.
Listed on the Shanghai Stock Exchange under code 601208.
Marine division formed after acquiring a dredging fleet.
Overseas revenue passes 50% of the group total for the first time.
1,200th project handed over; backlog reaches ¥ 412 bn.
Every site runs to a single group safety manual, translated into the working language of the crew. Incidents are reported to head office within 24 hours and audited quarterly by a team that does not report to the project director.
Lost-time injury frequency rate: 0.21 per million hours worked (2025 group average, all sites, self-reported and externally verified).
This site is informational only. Tender documents, prequalification packs and supplier registration are handled by the offices below.
Hammer Boom Building, 88 Jianguo Road
Chaoyang District, Beijing 100025
People's Republic of China
Send prequalification requests with the project reference in the subject line.
Results, filings and project announcements for SSE-listed code 601208.